Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The arrival of December correlates with a minor temperature reduction, down from November's fresh 52.7°F (11.5°C) to a frosty 44.1°F (6.7°C). East Lansdowne experiences a nighttime temperature average of 32.7°F (0.4°C) during December.Humidity
February, October and December, with an average relative humidity of 77%, are the most humid months.Rainfall
In East Lansdowne, Pennsylvania, in December, during 9.6 rainfall days, 2.4" (61mm) of precipitation is typically accumulated. Throughout the year, in East Lansdowne, there are 142 rainfall days, and 24.41" (620mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. In East Lansdowne, during December, snow falls for 1.5 days and regularly aggregates up to 0.75" (19mm) of snow. Throughout the year, there are 11.3 snowfall days, and 6.18" (157mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 24min of daylight.On the first day of December, sunrise is at 7:04 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 4:46 pm EST.
Sunshine
The average sunshine in December in East Lansdowne is 5.1h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the ordinary person.Note: In December, the maximum UV index of 2 suggests these recommendations:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the most humid month?
What is the average humidity in December?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When is the sunrise / sunset in December?
How many hours of sunshine does East Lansdowne have in December?
What is the month with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
East Lansdowne, PA
- Average high temperature in December: 44.1°F
The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (37.4°F).
- Average low temperature in December: 32.7°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).
Average pressure in December
East Lansdowne, PA
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
East Lansdowne, PA
- Average wind speed in December: 7.8mph
The windiest months (with the highest average wind speed) are February, March and April (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in December
East Lansdowne, PA
- Average humidity in December: 77%
The months with the highest relative humidity are February, October and December (77%).
The month with the lowest relative humidity is April (71%).
Average rainfall in December
East Lansdowne, PA
- Average rainfall in December: 2.4"
The wettest month (with the highest rainfall) is August (2.95").
The driest month (with the least rainfall) is January (1.46").
Average rainfall days in December
East Lansdowne, PA
- Average rainfall days in December: 9.6 days
The month with the highest number of rainy days is July (16.9 days).
The month with the least rainy days is January (6.6 days).
Average snowfall in December
East Lansdowne, PA
- Average snowfall in December: 0.75"
The month with the highest snowfall is March (2.05").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
East Lansdowne, PA
- Average snowfall days in December: 1.5 days
The month with the highest number of snowfall days is January (3.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
East Lansdowne, PA
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 5h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in December
East Lansdowne, PA
- Average sunshine days in December: 19.7 days
The month with the most sunshine days is January (20.8 days).
The month with the least sunshine days is July (12.1 days).
Average UV index in December
East Lansdowne, PA
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
East Lansdowne, PA
- Average cloud cover in December: 46
The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in December
East Lansdowne, PA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
East Lansdowne, Pennsylvania, USA
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